Your gut reaction is a first draft from a tired intern. Read it, then check its work.

Fast judgments are produced by a system optimized for speed rather than accuracy. They are useful, they are often roughly right, and they are assembled from whatever was nearest to hand, which means they carry your recent moods and old patterns in with them. Treating them as final is what causes trouble, not having them.

Let the reaction arrive, then ask what it is actually based on. If it is experience with this exact situation, it is probably worth a great deal. If it is a resemblance to something else, give it a second look before you act.